diff --git a/addons/sale_stock/tests/test_sale_stock.py b/addons/sale_stock/tests/test_sale_stock.py
index 6085c639f6e..a19cdcd268f 100644
--- a/addons/sale_stock/tests/test_sale_stock.py
+++ b/addons/sale_stock/tests/test_sale_stock.py
@@ -51,7 +51,7 @@ class TestSaleStock(TestSale):
         pick_2 = self.so.picking_ids[0]
         pick_2.force_assign()
         pick_2.pack_operation_product_ids.write({'qty_done': 1})
-        self.assertIsNone(pick_2.do_new_transfer(), 'Sale Stock: second picking should be final without need for a backorder')
+        self.assertTrue(pick_2.do_new_transfer(), 'Sale Stock: second picking should be final without need for a backorder')
         self.assertEqual(self.so.invoice_status, 'to invoice', 'Sale Stock: so invoice_status should be "to invoice" after complete delivery')
         del_qties = [sol.qty_delivered for sol in self.so.order_line]
         del_qties_truth = [2.0 if sol.product_id.type in ['product', 'consu'] else 0.0 for sol in self.so.order_line]
@@ -98,7 +98,7 @@ class TestSaleStock(TestSale):
         pick = self.so.picking_ids
         pick.force_assign()
         pick.pack_operation_product_ids.write({'qty_done': 2})
-        self.assertIsNone(pick.do_new_transfer(), 'Sale Stock: complete delivery should not need a backorder')
+        self.assertTrue(pick.do_new_transfer(), 'Sale Stock: complete delivery should not need a backorder')
         del_qties = [sol.qty_delivered for sol in self.so.order_line]
         del_qties_truth = [2.0 if sol.product_id.type in ['product', 'consu'] else 0.0 for sol in self.so.order_line]
         self.assertEqual(del_qties, del_qties_truth, 'Sale Stock: delivered quantities are wrong after partial delivery')
diff --git a/addons/stock/stock.py b/addons/stock/stock.py
index 45fe1e380d9..06bafd6a341 100644
--- a/addons/stock/stock.py
+++ b/addons/stock/stock.py
@@ -1589,6 +1589,8 @@ class stock_picking(models.Model):
     def do_new_transfer(self, cr, uid, ids, context=None):
         pack_op_obj = self.pool['stock.pack.operation']
         data_obj = self.pool['ir.model.data']
+        if not context:
+            context = {}
         for pick in self.browse(cr, uid, ids, context=context):
             to_delete = []
             if not pick.move_lines and not pick.pack_operation_ids:
@@ -1642,7 +1644,7 @@ class stock_picking(models.Model):
             if to_delete:
                 pack_op_obj.unlink(cr, uid, to_delete, context=context)
         self.do_transfer(cr, uid, ids, context=context)
-        return
+        return True
 
     def check_backorder(self, cr, uid, picking, context=None):
         need_rereserve, all_op_processed = self.picking_recompute_remaining_quantities(cr, uid, picking, done_qtys=True, context=context)